Copper-catalyzed oxidative coupling of arylboronic acids with aryl carboxylic acids: Cu3(BTC)2 MOF as a sustainable catalyst to access aryl esters†,Organic Chemistry Frontiers

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Copper-catalyzed oxidative coupling of arylboronic acids with aryl carboxylic acids: Cu3(BTC)2 MOF as a sustainable catalyst to access aryl esters†
Organic Chemistry Frontiers ( IF 4.6 ) Pub Date : 2018-06-13 00:00:00 , DOI: 10.1039/c8qo00519b
Nainamalai Devarajan _{1,

2,

3,

4,

5} , Palaniswamy Suresh _{1,

2,

3,

4,

5}

Affiliation

A convenient and sustainable method is demonstrated for the oxidative coupling of arylboronic acids with aryl carboxylic acids via C–O cross-coupling reaction catalyzed by the unsaturated coordination sites of copper present in the Cu₃(BTC)₂ MOF. Using air as an environment-friendly oxidant, the as-prepared Cu₃(BTC)₂ was employed in a MOF-based catalysis reaction with high efficiency and high chemoselectivity without the use of any external oxidants, ligands or additives. The present methodology avoids stoichiometric reagents and special reaction conditions, and shows excellent functional group tolerance with decent to excellent yields of aryl esters. The catalyst was found to exhibit high stability and reusability, without loss in activity even after several cycles, which was evident from the FT-IR, PXRD, and SEM characterizations of the reused catalyst.

中文翻译：

铜催化的芳基硼酸与芳基羧酸的氧化偶联：Cu ₃（BTC）₂ MOF作为获得芳基酯的可持续催化剂†

一种方便的和可持续的方法证明了的氧化偶联的芳基硼酸与芳基羧酸经由由于Cu本发明的铜的不饱和配位点催化的C-O交叉偶联反应₃（BTC）₂ MOF。使用空气作为环境友好的氧化剂，制得的Cu ₃（BTC）₂在不使用任何外部氧化剂，配体或添加剂的情况下，将其用于基于MOF的催化反应中，具有高效率和高化学选择性。本方法避免了化学计量的试剂和特殊的反应条件，并显示出优异的官能团耐受性，与芳基酯的优异产率相当。发现该催化剂表现出高的稳定性和可重复使用性，即使经过数次循环也没有活性损失，这从重复使用的催化剂的FT-IR，PXRD和SEM表征中可以明显看出。

更新日期：2018-06-13

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